Back-scattered electron imaging and elemental microanalysis of retrieved bone tissue following maxillary sinus floor augmentation with calcium sulphate

Clinical Oral Implants Research
Nicola SlaterR Sammons

Abstract

To investigate the presence and composition of residual bone graft substitute material in bone biopsies from the maxillary sinus of human subjects, following augmentation with calcium sulphate (CaS). Bone cores were harvested from the maxillary sinus of patients who had undergone a sinus lift procedure using CaS G170 granules 4 months after the initial surgery. Samples from seven patients, which contained residual biomaterial particles, were examined by field emission scanning electron microscopy and energy dispersive X-ray spectroscopy was used to determine the composition of the remaining bone graft substitute material. Residual graft material occurred in isolated areas surrounded by bone and consisted of individual particles up to 1 mm in length and smaller spherical granules. On the basis of 187 separate point analyses, the residual material was divided into three categories (A, B and C) consisting of: A, mainly CaS (S/P atomic% ratio > or =2.41); B, a heterogeneous mixture of CaS and calcium phosphate (S/P=0.11-2.4) and C, mainly calcium phosphate (S/P< or =0.11; C), which had a mean Ca : P ratio of 1.63+/-0.2, consistent with Ca-deficient hydroxyapatite. Linescans and elemental maps showed that type C material was present...Continue Reading

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Citations

Mar 16, 2011·The Journal of Craniofacial Surgery·Emanuele RugaPaolo Boffano
Jun 5, 2015·Materials Science & Engineering. C, Materials for Biological Applications·Yi-Fan GohRafaqat Hussain
Jun 13, 2009·Head & Face Medicine·Jörg HandschelNorbert R Kübler
Jun 11, 2016·Journal of Biomedical Materials Research. Part B, Applied Biomaterials·Jae Kook ChaUi-Won Jung
Aug 2, 2011·Journal of Oral and Maxillofacial Surgery : Official Journal of the American Association of Oral and Maxillofacial Surgeons·Ole T JensenMark Adams
Oct 26, 2016·Annals of Anatomy = Anatomischer Anzeiger : Official Organ of the Anatomische Gesellschaft·Naroa Lozano-CarrascalJosé Luis Calvo-Guirado
Nov 6, 2018·Journal of Materials Science. Materials in Medicine·Alessandro GavazzoniLuzmarina Hernandes
May 24, 2011·Journal of Biomaterials Applications·Paulo Pegado CortezAna Colette Maurício
Aug 5, 2017·Materials·María Piedad Ramírez FernándezPiedad N de Aza

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